Very grateful for all help with these clues please.
3ac: “Fans of Number one casino game milling around (10).”
4dn: “Kick up a row, clashing with grey knight (9).”
6dn: “Normal, presumably, to inject sulphur to bring pet relief (7).”
15ac: “Don famously did this list: a double dose , initially, of philosopher! (4,2,9).”